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STTH8R04DI

Public Made by Adom

by adom

STMicroelectronics Fast Recovery / High Efficiency Diodes, TO-220AC. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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STTH8R04DI

STMicroelectronics · Fast Recovery / High Efficiency Diodes · TO-220AC

STTH8R04DI from STMicroelectronics, in a TO-220AC. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 K passive Cathode of the ultrafast diode (VRRM 400 V, IF(AV) 8 A at TC = 115 °C for the insulated package).
2 A passive Anode of the ultrafast diode (IFSM 120 A for tp = 10 ms sinusoidal, Tj max 175 °C).

Key specifications

Parameter Value
Manufacturer STMicroelectronics
Package TO-220AC
Category Diodes
Pins 2

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Repetitive peak reverse voltage VRRM 400 V at 25 °C 2
Forward rms current IF(RMS) 20 A TO-220AC Ins 2
Average forward current IF(AV) 8 A TO-220AC Ins, TC = 115 °C, δ = 0.5, square wave 2
Repetitive peak forward current IFRM 165 A tp = 10 µs, F = 1 kHz 2
Surge non repetitive forward current IFSM 120 A tp = 10 ms sinusoidal 2
Storage temperature range Tstg -65 175 °C 2
Operating junction temperature range Tj -40 175 °C 2
Junction to case thermal resistance Rth(j-c) 5.5 °C/W TO-220AC Ins 2
Reverse leakage current IR 10 µA Tj = 25 °C, VR = VRRM 2
Reverse leakage current IR 10 100 µA Tj = 125 °C, VR = VRRM 2
Forward voltage drop VF 1.5 V Tj = 25 °C, IF = 8 A 2
Forward voltage drop VF 1.05 1.3 V Tj = 100 °C, IF = 8 A 2
Forward voltage drop VF 0.9 1.1 V Tj = 150 °C, IF = 8 A 2
Reverse recovery time trr 35 50 ns Tj = 25 °C, IF = 1 A, dIF/dt = -50 A/μs, VR = 30 V 3
Reverse recovery time trr 25 35 ns Tj = 25 °C, IF = 1 A, dIF/dt = -100 A/μs, VR = 30 V 3
Reverse recovery current IRM 5.5 8 A Tj = 125 °C, IF = 8 A, dIF/dt = -200 A/μs, VR = 320 V 3
Softness factor Sfactor 0.4 Tj = 125 °C, IF = 8 A, dIF/dt = -200 A/μs, VR = 320 V 3
Forward recovery time tfr 150 ns Tj = 25 °C, IF = 8 A, dIF/dt = 100 A/μs, VFR = 1.1 x VFmax 3
Peak forward voltage VFP 2.9 V IF = 8 A, dIF/dt= 100 A/µs 3

CAD (KiCad official)

  • Symbol: STTH8R04DI
  • Footprint: Package_TO_SOT_THT:TO-220-2_Vertical
  • 3D model: TO-220AC (KiCad packages3D, STEP)
  • 3D model files: stth8r04di-etched.step / stth8r04di-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); stth8r04di.step / stth8r04di.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: STMicroelectronics datasheet (14 pp, sha256 e3847e083414781f, retrieved 2026-10-23, tier: manufacturer)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (text+vision), consensus claude-opus-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF